public class Note {

    //Math类的常用方法
    //public static int abs(int a)  - 获取参数绝对值
    //public static double ceil(double a) - 向上取整
    //public static double floor(double a) - 向下取整
    //public static int round(float a) - 四舍五入
    //public static int max(int a ,int b) - 获取两个int值中的较大者
    //public static double pow(double a ,double b) - 返回a的b次幂的值
    //public static double random() - 返回值为double的随机值,范围[0.0,1.0)

}
